The dynamic characteristics of capacitive transducers are similar to those of 

Concept:

The transfer function of a capacitive transducer is given by:

\(\frac{{{E_o}}}{{{X_i}}}\left( {jω } \right) = \frac{{jω \tau }}{{1 + jω \tau }}\)

\(\left| {\frac{{{E_o}}}{{{X_i}}}} \right| = \frac{{ω \tau }}{{\sqrt {1 + {{\left( {ω \tau } \right)}^2}} }}\)

At ω = 0:

Magnitude M = 0.

At ω = ∞:

Magnitude M = 1.

The characteristic can be drawn as:

• Capacitive transducers are not used under static conditions.
• Capacitive transducers have high input impedance, thus less loading effect.
• Capacitive transducers have the same frequency response as high pass filters.
• Capacitive transducers have high sensitivity.